What does Romans 10:10 mean?
Paul continues his comparison of God's words to Israel in Deuteronomy 30:11–14. That passage was about obeying the commandments, which Paul aligns with believing in the gospel for the Israelites of his day. God told Israel that the command was already in their mouths and hearts. Paul wrote in the previous verse that both the mouth and heart are also involved in salvation by faith alone in Christ alone.Now Paul restates the concept he taught in the previous verse. With the heart a person believes and is justified—they are declared righteous by God, cleared of all the charges against them. Paul's statement is clear: The faith in Christ that leads to salvation is personal and internal (Jeremiah 31:31–34). The mouth, then, becomes the means by which someone expresses their faith in Christ. Only saved believers can truthfully say with their mouths what has happened in their hearts: they have placed their faith in Jesus.